diff options
| -rw-r--r-- | packages/bun-types/fs.d.ts | 172 |
1 files changed, 171 insertions, 1 deletions
diff --git a/packages/bun-types/fs.d.ts b/packages/bun-types/fs.d.ts index c2319e1c4..a8e3d11be 100644 --- a/packages/bun-types/fs.d.ts +++ b/packages/bun-types/fs.d.ts @@ -3930,7 +3930,30 @@ declare module "fs" { */ recursive?: boolean; } - + /** + * Class: fs.StatWatcher + * Extends `EventEmitter` + * A successful call to {@link watchFile} method will return a new fs.StatWatcher object. + */ + export interface StatWatcher extends EventEmitter { + /** + * When called, requests that the Node.js event loop _not_ exit so long as the `fs.StatWatcher` is active. Calling `watcher.ref()` multiple times will have + * no effect. + * + * By default, all `fs.StatWatcher` objects are "ref'ed", making it normally + * unnecessary to call `watcher.ref()` unless `watcher.unref()` had been + * called previously. + */ + ref(): this; + /** + * When called, the active `fs.StatWatcher` object will not require the Node.js + * event loop to remain active. If there is no other activity keeping the + * event loop running, the process may exit before the `fs.StatWatcher` object's + * callback is invoked. Calling `watcher.unref()` multiple times will have + * no effect. + */ + unref(): this; + } export interface FSWatcher extends EventEmitter { /** * Stop watching for changes on the given `fs.FSWatcher`. Once stopped, the `fs.FSWatcher` object is no longer usable. @@ -4067,6 +4090,153 @@ declare module "fs" { filename: PathLike, listener?: WatchListener<string>, ): FSWatcher; + /** + * Watch for changes on `filename`. The callback `listener` will be called each + * time the file is accessed. + * + * The `options` argument may be omitted. If provided, it should be an object. The`options` object may contain a boolean named `persistent` that indicates + * whether the process should continue to run as long as files are being watched. + * The `options` object may specify an `interval` property indicating how often the + * target should be polled in milliseconds. + * + * The `listener` gets two arguments the current stat object and the previous + * stat object: + * + * ```js + * import { watchFile } from 'fs'; + * + * watchFile('message.text', (curr, prev) => { + * console.log(`the current mtime is: ${curr.mtime}`); + * console.log(`the previous mtime was: ${prev.mtime}`); + * }); + * ``` + * + * These stat objects are instances of `fs.Stat`. If the `bigint` option is `true`, + * the numeric values in these objects are specified as `BigInt`s. + * + * To be notified when the file was modified, not just accessed, it is necessary + * to compare `curr.mtimeMs` and `prev.mtimeMs`. + * + * When an `fs.watchFile` operation results in an `ENOENT` error, it + * will invoke the listener once, with all the fields zeroed (or, for dates, the + * Unix Epoch). If the file is created later on, the listener will be called + * again, with the latest stat objects. This is a change in functionality since + * v0.10. + * + * Using {@link watch} is more efficient than `fs.watchFile` and`fs.unwatchFile`. `fs.watch` should be used instead of `fs.watchFile` and`fs.unwatchFile` when possible. + * + * When a file being watched by `fs.watchFile()` disappears and reappears, + * then the contents of `previous` in the second callback event (the file's + * reappearance) will be the same as the contents of `previous` in the first + * callback event (its disappearance). + * + * This happens when: + * + * * the file is deleted, followed by a restore + * * the file is renamed and then renamed a second time back to its original name + * @since v0.1.31 + */ + export interface WatchFileOptions { + bigint?: boolean | undefined; + persistent?: boolean | undefined; + interval?: number | undefined; + } + export type StatsListener = (current: Stats, previous: Stats) => void; + export type BigIntStatsListener = ( + current: BigIntStats, + previous: BigIntStats, + ) => void; + /** + * Watch for changes on `filename`. The callback `listener` will be called each + * time the file is accessed. + * + * The `options` argument may be omitted. If provided, it should be an object. The`options` object may contain a boolean named `persistent` that indicates + * whether the process should continue to run as long as files are being watched. + * The `options` object may specify an `interval` property indicating how often the + * target should be polled in milliseconds. + * + * The `listener` gets two arguments the current stat object and the previous + * stat object: + * + * ```js + * import { watchFile } from 'node:fs'; + * + * watchFile('message.text', (curr, prev) => { + * console.log(`the current mtime is: ${curr.mtime}`); + * console.log(`the previous mtime was: ${prev.mtime}`); + * }); + * ``` + * + * These stat objects are instances of `fs.Stat`. If the `bigint` option is `true`, + * the numeric values in these objects are specified as `BigInt`s. + * + * To be notified when the file was modified, not just accessed, it is necessary + * to compare `curr.mtimeMs` and `prev.mtimeMs`. + * + * When an `fs.watchFile` operation results in an `ENOENT` error, it + * will invoke the listener once, with all the fields zeroed (or, for dates, the + * Unix Epoch). If the file is created later on, the listener will be called + * again, with the latest stat objects. This is a change in functionality since + * v0.10. + * + * Using {@link watch} is more efficient than `fs.watchFile` and`fs.unwatchFile`. `fs.watch` should be used instead of `fs.watchFile` and`fs.unwatchFile` when possible. + * + * When a file being watched by `fs.watchFile()` disappears and reappears, + * then the contents of `previous` in the second callback event (the file's + * reappearance) will be the same as the contents of `previous` in the first + * callback event (its disappearance). + * + * This happens when: + * + * * the file is deleted, followed by a restore + * * the file is renamed and then renamed a second time back to its original name + */ + export function watchFile( + filename: PathLike, + options: + | (WatchFileOptions & { + bigint?: false | undefined; + }) + | undefined, + listener: StatsListener, + ): StatWatcher; + export function watchFile( + filename: PathLike, + options: + | (WatchFileOptions & { + bigint: true; + }) + | undefined, + listener: BigIntStatsListener, + ): StatWatcher; + /** + * Watch for changes on `filename`. The callback `listener` will be called each time the file is accessed. + * @param filename A path to a file or directory. If a URL is provided, it must use the `file:` protocol. + */ + export function watchFile( + filename: PathLike, + listener: StatsListener, + ): StatWatcher; + /** + * Stop watching for changes on `filename`. If `listener` is specified, only that + * particular listener is removed. Otherwise, _all_ listeners are removed, + * effectively stopping watching of `filename`. + * + * Calling `fs.unwatchFile()` with a filename that is not being watched is a + * no-op, not an error. + * + * Using {@link watch} is more efficient than `fs.watchFile()` and`fs.unwatchFile()`. `fs.watch()` should be used instead of `fs.watchFile()`and `fs.unwatchFile()` when possible. + * @since v0.1.31 + * @param listener Optional, a listener previously attached using `fs.watchFile()` + */ + export function unwatchFile( + filename: PathLike, + listener?: StatsListener, + ): void; + export function unwatchFile( + filename: PathLike, + listener?: BigIntStatsListener, + ): void; interface CopyOptionsBase { /** * Dereference symlinks |